EP3949825A1 - Dispositif de protection de l'eau pour un appareil électroménager à circulation d'eau - Google Patents

Dispositif de protection de l'eau pour un appareil électroménager à circulation d'eau Download PDF

Info

Publication number
EP3949825A1
EP3949825A1 EP21187860.8A EP21187860A EP3949825A1 EP 3949825 A1 EP3949825 A1 EP 3949825A1 EP 21187860 A EP21187860 A EP 21187860A EP 3949825 A1 EP3949825 A1 EP 3949825A1
Authority
EP
European Patent Office
Prior art keywords
water
protection device
water protection
inlet
seal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP21187860.8A
Other languages
German (de)
English (en)
Inventor
René Henke-Bockschatz
Stephan Schmidt
Jessica Wegerhoff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP3949825A1 publication Critical patent/EP3949825A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/081—Safety arrangements for preventing water damage

Definitions

  • the invention relates to a water protection device for a water-carrying household appliance, in particular for a dishwasher, a washing machine or a washer-dryer, with a housing providing a flow channel for water, which has an inlet socket on the water connection side and a hose connection on the appliance side, with a device-controlled valve device, by means of which the flow channel can be unblocked or can be blocked, with a flow regulator which is arranged in the flow channel between the inlet socket and the valve device and comprises an elastic regulator element, and with a seal on the inlet socket.
  • a generic water protection device is connected to the fluidic connection between a water connection for supplying the household appliance with water on the one hand and the household appliance on the other hand.
  • the household appliance is therefore fluidically connected to the water connection, which can be a water tap, for example, with the water protection device being interposed.
  • the water protection device has a housing that provides a flow channel. When used as intended, water flows from the water connection to the household appliance via this flow channel.
  • the housing has an inlet socket for connecting the water protection device to a water connection. This is designed on the water connection side. On the device side, the housing has a hose connection to which a hose is connected at one end when used as intended.
  • the hose is fluidically connected to the household appliance.
  • the water protection device also has a device-controlled valve device.
  • the flow channel can be blocked or unblocked by means of this valve device, with no water being able to get from the water connection to the household appliance if the flow channel is blocked.
  • the valve device is controlled by the household appliance itself, ie by the control provided by the household appliance. When the household appliance is used as intended, the valve device therefore opens and closes as a function of a flushing process to be completed by the household appliance.
  • the valve device of the water protection device is normally in the closed state, in which the flow channel is blocked, and is only opened when required. This means that only when the valve device is actuated, i.e. energized, does water flow from the water connection to the household appliance.
  • the water protection device also has a flow regulator so that the household appliance can be subjected to the intended amount of water.
  • a flow regulator which serves in particular as a volume flow limiter and is arranged in the flow channel between the inlet connection and the valve device.
  • the flow controller typically has a controller receptacle, which is fixedly arranged within the flow channel and is of rigid design, and an elastic controller element, which is carried by the controller receptacle.
  • the elastic regulator element deforms and/or bends due to the water pressure depending on the pressure difference that exists between the inlet side and the outlet side of the flow regulator, and thereby causes a cross-sectional change within the flow channel that depends on the pressure difference.
  • the flow controller is designed in such a way that, when used as intended, it ensures a constant water volume flow at least within a specific water connection pressure range and thus a virtually constant water supply to the household appliance with water coming from the water connection, which, in combination with an impeller meter, for example, allows the To determine exactly the amount of water to be supplied to the household appliance.
  • the elastic control element typically consists of ethylene propylene diene rubber (EPDM)
  • a generic water protection device also has a seal on the inlet nozzle side. This seal is also typically made of EPDM.
  • the invention proposes a water protection device of the type mentioned at the outset, which is characterized in that the seal on the inlet connection and/or the elastic control element are made of silicone.
  • silicone instead of EPDM for the inlet connection-side seal and/or for the elastic control element.
  • silicone is more expensive, this disadvantage is consciously accepted. Because silicone is characterized on the one hand by its longevity and on the other hand its low relaxation behavior.
  • a seal formed from silicone and a regulator element formed from silicone thus ensure long-lasting, reliable sealing and functionality of the flow device.
  • the configuration according to the invention not only provides the advantage of improved longevity or sealing and functionality.
  • silicone in contrast to EPDM, silicone is more suitable for not deteriorating the quality of the water in the sense of the drinking water ordinance when it comes into contact with water.
  • the use of silicone therefore produces the synergetic effect of satisfying an increased demand for an unchanged quality of the water flowing through the water protection device when used as intended.
  • the use of silicone thus proves to be advantageous in two respects.
  • seals or regulator elements made of silicone in contrast to seals or regulator elements made of EPDM, also means that the water protection device does not have to be redesigned. In particular, no further adjustments are required, not even the addition of further functional components or groups. It is therefore also possible to retrofit existing water protection devices, with not only an improved sealing effect and functionality being achieved, but also a reduced impairment of the water quality.
  • the configuration according to the invention proves to be efficient and cost-effective overall. Conformity with the Drinking Water Ordinance is given, while at the same time ensuring a long-lasting sealing effect and functionality.
  • the silicone is an addition-crosslinking silicone.
  • addition-curing silicone is particularly suitable because it is particularly dimensionally stable and durable. It is therefore preferable to use addition-curing silicone instead of peroxide-curing silicone. This is also because the mechanical properties of addition-crosslinking silicone are those that are particularly advantageous for use as a seal or regulator element of a flow regulator in a water protection device. In this context, particular mention should be made of tear strength.
  • addition-curing silicone has a comparatively low relaxation behavior, which further increases the long-term, reliable sealing effect and functionality.
  • the inlet connection piece carries a union nut, which is rotatably mounted on a collar.
  • the mechanical connection between the water protection device and the water connection is made using the union nut.
  • its thread engages in a corresponding mating thread provided by the water connection.
  • the union nut rests on a collar of the inlet connection so that it can be rotated, which enables simple assembly.
  • the seal on the inlet connection piece is in contact with the collar. In the final assembled state, the seal is therefore located between the water connection on the one hand and the collar of the inlet connection on the other. Tightening the union nut compresses the seal located between the water connection and the inlet connection, so that the opposing force generated by the seal ensures an effective seal between the water connection and the inlet connection.
  • the use of silicone as the material for the seal according to the invention has the effect that a long-lasting, reliable seal is provided.
  • the flow controller has a controller receptacle, which is arranged fixedly and rigidly in particular within the flow channel, and an elastic controller element, which is carried by the controller receptacle.
  • the elastic regulator element deforms and/or bends due to the water pressure depending on the pressure difference that exists between the inlet side and the outlet side of the flow regulator, and thereby causes a cross-sectional change within the flow channel that depends on the pressure difference.
  • the flow controller in particular the elastic controller element, ensures a reproducible and constant water volume flow, which is a prerequisite for an exact determination of the quantity.
  • this elastic regulator element is preferably made of silicone, most preferably in combination with a seal on the inlet port side that is also made of silicone.
  • the elastic control element is an annular disk. This structural configuration proves to be particularly simple to manufacture and assemble and, moreover, to be cost-effective.
  • the valve device has a solenoid valve with a closure element which interacts with a valve seat provided by the housing of the water protection device.
  • the closure element In the de-energized state of the solenoid valve, the closure element is pressed by a valve piston of the solenoid valve into the valve seat, so that the valve device is closed.
  • the closure element is carried by a flexible membrane, which the closure element extends through and causes the closure element to be sealed in the valve seat.
  • EPDM is particularly suitable for fulfilling these material properties, which is why it is proposed with the invention according to a further feature that the membrane consists of EPDM.
  • the use of EPDM is uncritical with regard to the Drinking Water Ordinance if, according to the invention, the inlet connection-side seal and/or the elastic control element are made of silicone, ie not made of EPDM.
  • the configuration according to the invention also proves to be advantageous in this respect because it allows the membrane to consist of EPDM, which advantageously takes special account of the requirements to be made of a membrane both in terms of manufacturing technology and in terms of mechanics.
  • a water-carrying household appliance for example a dishwasher, a washing machine or a washer-dryer, with a water protection device according to one of the aforementioned exemplary embodiments, is also proposed.
  • FIG. 1 shows a water protection device 1 according to the invention in a schematic longitudinal section.
  • This has a housing 2 that provides a flow channel 3 .
  • the housing 2 has an inlet socket 4 on the water connection side and a hose connection 15 on the device side.
  • the inlet connector 4 carries a union nut 6 rotatably mounted on a collar 5. In the intended use case, this serves to mechanically connect the water protection device 1 to a water connection provided in the building, not shown in detail, such as a water tap.
  • a seal 7 is provided on the inlet connection side, which rests against the collar 5 of the inlet connection 4 .
  • the inlet connector-side seal 7 is pressed between the inlet connector 4 and the water connection, not shown in the figure, for the purpose of sealing.
  • a hose 16 is provided for the fluidic connection of the water protection device 1 to a water-carrying household appliance, for example a dishwasher, a washing machine or a washer-dryer. In the final assembled state, this is pulled onto the hose connection 15 of the water protection device 1 and secured in position by means of a hose clamp, not shown in detail in the figure.
  • the water protection device 1 also has a valve device 21 controlled by the control device of the household appliance.
  • the valve device 21 has a solenoid valve 8 .
  • two solenoid valves 8 arranged one behind the other in the direction of flow 17 can also be provided in the sense of redundant protection. These are preferably of the same construction.
  • Solenoid valve 8 shown has an electric coil 1, which is in magnetic operative connection with a valve piston 12, which carries a plug 22 at the end.
  • the solenoid valve 8 also has a conical closure element 13 which interacts with a valve seat 14 provided by the housing 2 of the water protection device 1 .
  • 1 shows the closed, i.e. de-energized, state of the valve device 21, in which the valve piston 12 rests with its end plug 22 on the closure element 13 and the closure element 13 is thus pressed into the valve seat 14 and the valve opening 23, which is in figure 3 , which have the same water protection device 1 of 1 shows in the open state, is shown, so that it closes.
  • the cone-shaped closure element 13 is carried by a flexible membrane 10, through which it protrudes in the middle.
  • a control device of the household appliance ensures that the solenoid valve 8 is energized, as a result of which the valve piston 12 is lifted off the closure element 13 together with its end plug 22 .
  • 2 shows for the water protection device from 1 an intermediate state briefly assumed immediately after activation, ie energization of the solenoid valve 8 .
  • the closure element 13 initially remains in the valve seat 14 and water, which has passed through the equalization openings provided by the membrane 10, passes through one or more bypass openings 24 provided by the closure element 13, i.e. bypassing the valve opening 23, through the closure element 13 to the household appliance side Side of the valve device 21.
  • the closure element 13 In the open position of the solenoid valve 8 according to 3 the closure element 13 is therefore not in contact with the valve seat 14, so that the flow channel 3 is open and water flowing into the water protection device 1 via the water connection passes through the valve opening 23 and thus overall in the flow direction 17 of the water protection device through the flow channel 3 and reaches the hose 16 on the device can.
  • the closure element 13 In the closed position of the solenoid valve 8, as shown in 1 is shown and which is present in particular in the "non-energized" case, however, the closure element 13 is sealingly on the valve seat 14, whereby the flow channel 3 is blocked.
  • the membrane 10 formed from EPDM according to the invention and the stopper 22 formed from NBR according to the invention act as sealing means.
  • a flow regulator 18 is arranged in the flow channel 3 between the inlet connection 4 and the valve device 21 .
  • This has a controller mount 19 which is made in particular of plastic, in particular EPDM, which is fixedly arranged within the flow channel 3 and is at least largely rigid, and an elastic controller element 20 which is carried by the controller mount 19 .
  • the controller receptacle 19 is designed as an annular body, which is pressed circumferentially against the inner wall of the housing 2 of the water protection device 1 and has a central, i.e. axial, passage opening and several eccentric passage openings.
  • the regulator receptacle 19 On the inlet side of the flow regulator 18, the regulator receptacle 19, which is otherwise designed in the manner of an annular disk, merges into a cylindrical extension, on which the elastic regulator element 20 is arranged or fixed, enclosing the extension.
  • the elastic regulator element 20 is designed in such a way that it deforms or bends in the direction of flow 17 the more, the greater the pressure difference between the area in front of and behind the flow regulator 18 in the direction of flow 17 . According to the deformation or bending of the elastic regulator element 20, the gap between the elastic regulator element 20 and the annular disk-like area of the regulator receptacle 19 is narrowed. In this way, the elastic regulator element 20 ensures that the volume flow of the fresh water flowing through the through-openings of the flow regulator 18 is kept approximately constant, at least within a predetermined pressure range.
  • the inlet nozzle-side seal 7 and the elastic control element 20 of the flow controller 18 are the same as the Diaphragm 10 of valve device 21 is made of an elastomer, and plug 22 of the valve piston of valve device 21 is made of nitrile rubber (NBR).
  • NBR nitrile rubber

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Lift Valve (AREA)
EP21187860.8A 2020-08-06 2021-07-27 Dispositif de protection de l'eau pour un appareil électroménager à circulation d'eau Withdrawn EP3949825A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020120724.7A DE102020120724A1 (de) 2020-08-06 2020-08-06 Wasserschutzeinrichtung für ein wasserführendes Haushaltsgerät

Publications (1)

Publication Number Publication Date
EP3949825A1 true EP3949825A1 (fr) 2022-02-09

Family

ID=77071335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21187860.8A Withdrawn EP3949825A1 (fr) 2020-08-06 2021-07-27 Dispositif de protection de l'eau pour un appareil électroménager à circulation d'eau

Country Status (2)

Country Link
EP (1) EP3949825A1 (fr)
DE (1) DE102020120724A1 (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3208316A1 (de) * 1982-03-08 1983-09-29 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Magnetventil, insbesondere fuer enthaertungs- einrichtungen von geschirrspuelmaschinen
DE3520863A1 (de) 1985-06-11 1986-12-11 Miele & Cie GmbH & Co, 4830 Gütersloh Sicherheitsvorrichtung gegen leckwasserschaeden bei wasserfuehrenden haushaltgeraeten
EP2343469A2 (fr) * 2010-01-12 2011-07-13 BSH Bosch und Siemens Hausgeräte GmbH Soupape et appareil ménager transportant de l'eau doté d'au moins une soupape
WO2012140595A2 (fr) * 2011-04-15 2012-10-18 Eltek S.P.A. Dispositif de sécurité contre les fuites de fluide destiné à des appareils électroménagers
DE102012211158A1 (de) * 2012-06-28 2014-01-23 BSH Bosch und Siemens Hausgeräte GmbH Schlauch für ein wasserführendes Haushaltsgerät, insbesondere Haushaltsgeschirrspülmaschine oder Haushaltswaschmaschine
DE19650861B4 (de) * 1995-12-13 2014-04-24 Eltek S.P.A. Sicherheitsvorrichtung gegen Überschwemmung für Haushaltsgeräte
WO2014195014A2 (fr) * 2013-06-07 2014-12-11 Kottmann Technology Gmbh Dispositif d'amenée de liquide à un appareil ménager
EP2489298B1 (fr) 2011-02-18 2015-03-25 BITRON S.p.A. Ensemble pré-assemblé pour dispositif d'arrêt d'eau et dispositif le comprenant
DE102013225530A1 (de) * 2013-12-11 2015-06-25 BSH Hausgeräte GmbH Haushaltsgerät mit einem Magnetventil
DE112014003303T5 (de) * 2013-07-16 2016-03-31 Bitron S.P.A. Zufuhr- und/oder Sicherheitsvorrichtung für eine Waschmaschine
EP3418436A1 (fr) * 2017-06-21 2018-12-26 Schlemmer Holding GmbH Dispositif de tuyau et agencement

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3208316A1 (de) * 1982-03-08 1983-09-29 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Magnetventil, insbesondere fuer enthaertungs- einrichtungen von geschirrspuelmaschinen
DE3520863A1 (de) 1985-06-11 1986-12-11 Miele & Cie GmbH & Co, 4830 Gütersloh Sicherheitsvorrichtung gegen leckwasserschaeden bei wasserfuehrenden haushaltgeraeten
DE19650861B4 (de) * 1995-12-13 2014-04-24 Eltek S.P.A. Sicherheitsvorrichtung gegen Überschwemmung für Haushaltsgeräte
EP2343469A2 (fr) * 2010-01-12 2011-07-13 BSH Bosch und Siemens Hausgeräte GmbH Soupape et appareil ménager transportant de l'eau doté d'au moins une soupape
EP2489298B1 (fr) 2011-02-18 2015-03-25 BITRON S.p.A. Ensemble pré-assemblé pour dispositif d'arrêt d'eau et dispositif le comprenant
WO2012140595A2 (fr) * 2011-04-15 2012-10-18 Eltek S.P.A. Dispositif de sécurité contre les fuites de fluide destiné à des appareils électroménagers
DE102012211158A1 (de) * 2012-06-28 2014-01-23 BSH Bosch und Siemens Hausgeräte GmbH Schlauch für ein wasserführendes Haushaltsgerät, insbesondere Haushaltsgeschirrspülmaschine oder Haushaltswaschmaschine
WO2014195014A2 (fr) * 2013-06-07 2014-12-11 Kottmann Technology Gmbh Dispositif d'amenée de liquide à un appareil ménager
DE112014003303T5 (de) * 2013-07-16 2016-03-31 Bitron S.P.A. Zufuhr- und/oder Sicherheitsvorrichtung für eine Waschmaschine
DE102013225530A1 (de) * 2013-12-11 2015-06-25 BSH Hausgeräte GmbH Haushaltsgerät mit einem Magnetventil
EP3418436A1 (fr) * 2017-06-21 2018-12-26 Schlemmer Holding GmbH Dispositif de tuyau et agencement

Also Published As

Publication number Publication date
DE102020120724A1 (de) 2022-02-10

Similar Documents

Publication Publication Date Title
EP3134792B1 (fr) Réducteur de pression
EP2527700A1 (fr) Soupape
DE102008063257B3 (de) Durchflussmengenregler
DE1254970B (de) Abdichtung einer in einem Fluessigkeitsgefaess angeordneten Membranpumpe
EP4208657B1 (fr) Soupape antiretour dotée d'une soupape de surpression intégrée
DE202011051425U1 (de) Druckminderer-Anordnung
DE202010009135U1 (de) Dichtring, Durchflussmengenregler sowie Brausearmatur mit einem Durchflussmengenregler
DE102014005854B4 (de) Druckreduzierventil
DE10306873B4 (de) Wasserzähler mit nach aussen gedichtetem Messeinsatz
DE102005011951B4 (de) Ventil
DE102007010227A1 (de) Gasströmungswächter
EP3949825A1 (fr) Dispositif de protection de l'eau pour un appareil électroménager à circulation d'eau
DE102014004668A1 (de) Ventil
WO2006082092A1 (fr) Regulateur de debit
DE102010023962A1 (de) Dichtring, Durchflussmengenregler sowie Brausearmatur mit einem Durchflussmengenregler
DE102007006285A1 (de) Rückflussverhinderer
DE3044880C2 (de) Rückflußverhinderungsventil
DE102019107268A1 (de) Ventilvorrichtung
EP3048205B1 (fr) Dispositif de séparation de système
DE19919910A1 (de) Vorrichtung mit zumdindest einem Fluidkanal
DE2360274A1 (de) Zulaufschlauch mit selbstschliessendem sicherheitsventil
DE102013012022B4 (de) Ventilkappe für einen Duftstoffbehälter
DE102010037720A1 (de) Sicherheitsvorrichtung für ein wassergespeistes Haushaltsgerät
DE29517768U1 (de) Wegeventil zur Steuerung eines Druckmittelstroms
DE202015003689U1 (de) Absperrventil und dessen Herstellung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20220810